Question

Speech on vehicles of olden times to new

Answer 1

HI there,

It is essential that a vehicle have a source of energy to drive it. Energy can be extracted from external sources, as in the cases of a sailboat, a solar-powered car, or an electric streetcar that uses overhead lines. Energy can also be stored, provided it can be converted on demand and the storing medium's energy density and power density are sufficient to meet the vehicle's needs.

Human power is a simple source of energy that requires nothing more than humans. Despite the fact that humans cannot exceed 500 W (0.67 hp) for meaningful amounts of time,[32] the land speed record for human-powered vehicles is 133 km/h (83 mph), as of 2009 on a recumbent bicycle.

The most common type of energy source is fuel. External combustion engines can use almost anything that burns as fuel, whilst internal combustion engines and rocket engines are designed to burn a specific fuel, typically gasoline, diesel or ethanol.

Answer 2

THE VECHILES IS THE IMPORTANT ROLE IN THE LIFE OF THE EVERY PERSON. BECAUSE THE VECHILES HELP PEOPLE IN THERE VARIOUS WORKS.
............
IN THE OLDEN DAYS PEOPLE USES THE BULLOCK CART AS VECHILES.
THEY DON'T HAVE ANY KIND OF ENGINE VECHILES.

AFTER USING THE BULLOCK CART.
THERE IS THE INVENTED OF THE VECHILES IN 18 TH CENTURY.
AND THEREFORE PEOPLE HAS USE THE VECHILES IN THERE WORK.
NOWADAYS THE VECHILES ARE VERY LUXURIOUS.
IN OLDEN DAYS THIS IS A VERY BIG PROBLEM OF THE VECHILES.
THEY HAVE TO WALK OF 10 TO 100 KM.